INDEX 



ABBREVIATIONS. 



f=flgure. 

 m=map. 

 sp=species. 

 syn=synonym. 



Abbey, W. L. 766 

 Absinth 307 



Abutilon theoplirasti (sun. avicennae) 

 215-218, 718, 790, 796, 799, f. 216, 

 217, 713 



Distribution 734, 762, m. 116 



Seed 557-558, f. 559 

 Acacia, False 



Distribution 718 

 Acaena ovina 849 

 Acalypha virginica 205-207, 788, f. 806 



Distribution 718, m. 207 



Seed 457, f. 1,57 

 Acer saccharinum, Seed f. 634 

 Achene S62 



Achillea millefolium 358-360, 77S, 787, 

 f. 359, 71,1 



Chemical composition 674 



Distribution 69S, 720, 736, 740, m. 

 359 



Seed 491, f. -',91 

 Acidia heraclei 677 



Acloque, A. 731, 737, 738, 740, 754, S37 

 Acnida tamariscina 118 



tuberculata 118-119, 7S9, f. IIS 



Distribution m. 119 



Seed 435, f. 435 

 tuberculata v. prostrata 



Distribution 716 

 Adams, G. R 846 

 Adaptation of plants 637 

 Aderhold, R. 846 

 Adulterated seed 811-815, 827. 856, 857, 



858, 859, 860 

 Adulteration and Seeds Act 793 

 Adventive plants 696-697, 707 

 Aegopodium podasrraria 



Distribution 736 

 Aerial roots 862 

 Aethusa cynapium 663 



Distribution 736 

 Africa, Weeds. 722, 731, 732, 733, 734 

 African Colonies, South 



Weed laws 793 

 Agastache scrophulariaf folia 



Seed 567. f. 410, 567 

 Ageratum convzoides 



Distribution 7 34 

 Agoseris cuspidata 502, f. 501 

 Agrimonia striata 



Distribution 7 34 

 Agronyron caninum 



Distribution 715 

 repens 53-58, 664, 774, 796, 799, f. 51,, 



Chemical composition 57-58 

 Distribution 715, 736. m. 55 

 Root system 652, f 61,8 

 Seed 421-423, 810, f. 4£2, CSS 

 smithii 53 



Distribution m.. 56 

 Seed 423, f. 485 

 tenerum 



Distribution m. 56 

 Seed f. ', 1 

 Agrostemma eithaffo 125-126, 789, Si!), 



f. tf5, 700 

 Distribution 699, 716, 735, 736, m. 



126 

 Seed 436, 776, 810, S29, f. 1,36, 6SS 



56 



Agrostis alba 667 

 Distribution 715 

 Seed 415, 811, 813, f. ',15 

 canina 677 

 hyemalis 



Distribution 732 

 sp. 664 

 spica-venti 



Distribution 736 

 vulgaris 851 

 Agueweed 7 80 

 Aira caespitosa 667 

 Aizoaceae 



Distribution 723 

 Alabama Flora 707-708, 722-723 

 Alberta weed legislation 793 

 Albugo Candida f. 6S1 

 Albumen 862 

 Alchemilla arvensis 664 

 Aleurone cells 524, 530, f. 528, 529 

 "fleck" 55 3 

 grains 862 



layer 510, 519, 549, 572, f. 51S 

 Alfalfa 1S3, 852, f. 595 

 Dodder 



Seed 810 

 Rocket 159 



Seed 810, 811, 812, 828. 831, 833, 855 

 Impurities 712, 833, 834, 836, 839, 

 856, 857, 858, 859 

 Alfilaria 



Distribution 725 

 Seed 4 5 7. f. 1,57 

 Alice, G. 847 

 Alien plants 6^7-698 

 Alkali soils, Weeds 820 

 Alkanet 256 



Allium canadense 67, 623, 787, f. 68 

 Distribution 67, 68 

 carinata 



Distribution 839 

 vineale 



Distribution 715 

 Almond 175 



Alopecurus agrestis 664, 665 

 Distribution 736 

 geniculatus f. ?■'.' 



Distribution 715, 732-740 

 pratensis 



Distribution 715 

 Alpers 713, 738, 740 

 Alsike Clover 



Seed 450, 810, 812, 830, f. 1,51, 638 

 Impurities f. 638 

 Alternate flowers S62 



leaves 594. 862 

 Alyssum, Hoary 147-149. f. 11,8 

 Distribution 717, m. l',S . 

 Sweet 14:2 

 Amaranth 



Family 113-119 

 Distribution 723 

 Seed 434-435 

 Purple 697 



RouQh sun. Rour/h Pigweed 

 sp. f. 636 

 Spiny 697 



Distribution 723 

 Spreading syn. Prostrate Pigweed 

 Tumbling syn. Tumbling Pigweed 



